EP 0097970 B1 19860813 - PROCESS FOR PREPARING POLYARYLATES
Title (en)
PROCESS FOR PREPARING POLYARYLATES
Publication
Application
Priority
US 39355682 A 19820630
Abstract (en)
[origin: EP0097970A1] An improved process for preparing a polyarylate having a reduced viscosity of from about 0.1 to greater than 1.0 dl/gm comprising the following steps:(a) reacting an acid anhydride derived from an acid containing from 2 to 8 carbon atoms with at least one dihydric phenol to form the corresponding diester: and(b) reacting said diester with at least one aromatic dicarboxylic acid at a temperature sufficient to form the polyarylate, wherein the improvement comprises carrying out said process in the presence of a particular solid adsorbent.
IPC 1-7
IPC 8 full level
C08G 63/00 (2006.01); C08G 63/18 (2006.01); C08G 63/19 (2006.01); C08G 63/193 (2006.01); C08G 63/78 (2006.01); C08G 63/83 (2006.01); C08G 63/90 (2006.01); C08L 67/02 (2006.01); C08L 67/03 (2006.01)
CPC (source: EP US)
C08G 63/193 (2013.01 - EP US); C08G 63/78 (2013.01 - EP US); C08G 63/83 (2013.01 - EP US); C08G 63/90 (2013.01 - EP US); C08L 67/03 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0097970 A1 19840111; EP 0097970 B1 19860813; AT E21405 T1 19860815; CA 1210890 A 19860902; DE 3365288 D1 19860918; JP S5912923 A 19840123; US 4439586 A 19840327
DOCDB simple family (application)
EP 83106347 A 19830629; AT 83106347 T 19830629; CA 430181 A 19830610; DE 3365288 T 19830629; JP 11626483 A 19830629; US 39355682 A 19820630